Food-preserving jar



H. RITTE FOOD PRESERVING JAR Filed oef. 2o, ms

Apri

Patented pr. 5 1927.

Unirse svrArss n renna narrar oFF-ica HEINRICH RITTER, or ESSLINGEN, enfermar, Assrenoa ToV 'fran FIRM nia. rincari ammalarsi-GESELLSCHAFT M. B. or sTrTGARr, GERMANY.

r'ooD-rnnsnnvrne JAR.

Applieatn med .ouobe 20, 1923, Serial No. :669,759, and nSvvit'zcrland Au'gust`21,1922.

y remainder.

In the drawings affixed to this specification and forming part thereof a Vfood preserving jar embodying myinvention is illus'- t-rated diagranunatically by lway of eX- .:imple. In the drawingsi Figure 1 is an elevation, partly in vertical section;

.Figure 2 is an axial section, drawn to a larger scale, of the upper portion of the j ar and its accessories.

Figure 3 isa similarvview of a modification.

Referring to the drawing, the body a of the jar, and the neck portion Z) are united at c by welding. The part b is provided with a flange b1 through which extend threaded bolts d provided with winged nuts f by means of which the cover e may be secured in place, a packingring .g being ar` ranged between the rim or flange el of the fcover e and the rim or flange b1' of the neck Y' f The cent-ral part of the cover e is raised and so shaped as to form a threaded projection h; onto which is screwed an airkinlet cock c' which is preferably arranged to be sealed. A tube c filled with sterilizedwadding or the like is mounted in the upper end of the cock c', and a threaded branch pipe a extending laterally from the tube m is provided at its endwith` a check valve 0 of the kind used in connection with bicycle tires.

A branch tube p is provided near the bottom of the jar and a tap cock g is screwed onto this branch, this cock being also pref-- i lerably arranged to be sealed.

The material to be preserved, for instance, a liquid, such as milk, fruit-juice, mashed fruit or the like, is introducedinto the receptacle after the nuts f have been unscrewed and the cover@ has been removed'. The cover is then mounted in place on the receptacle and is air-tightly closed with the aid of the bolts d and the nuts f. If nec essai-y, the contents of the` receptacle are heated prior to closing the receptacle, so as to expel the air.

. If the contents `of the receptacle are liquid, they may be tapped off at once through the tap cock, provided that the air cock 111 and valve o be opened or the filter tube m with its branch` a be previously removed. 4 u

If, however, the matter contained in the receptacle c is thickl or pulpy, the tube m with its b-ranch fn. is attached to the cover and compressed air is forced into the receptacle through the wadding, whereby the mashed or stewed fruit or the like can be forced out in parts, the cocks i and g being ures 1 and 2 which consists in a shaft 7' eX-` tending through the tube m and the bore of' the plug of the cock z', land provided at its top with a hand crank 'a and supported atl its foot by a thrust bearing t. The shaft 7" can be easily removed from the tube m, and

is provided with at least one stirringblade s, the size of which is such that itv moves when beingv rotated nearly through the entire section of the receptacle.

The wedding serves in this case for packing'the Vshaft r. vAt the upper end of the tube m is a sleeve m which is exteriorly n threaded and below the flange of which is arranged an asbestosl ring The sleeve l.

consists preferably of brass orthe like. If the apparatus is tol be used without the stirring device, the shaft 7 with its crank and the stirring blade are removed therefrom. The threaded sleeve af: is 4removed. also and replaced by a threaded plug a, (Fig. 8).

If the content of the receptacle a is stirred at certain intervals, its homogenity is restored, and it flowsr off not only from the center part of the receptacle, but also from the Walls.

An important feature consists in the ablili) sence oi' any danger of germ-containing air getting access to the interior of the receptacle and spoiling its contents.

I Wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications Will occur to a person skilled in the art.

I claim l. Preserving jar comprising a perforated cover7 a stop cock in the perforation of said cover, an air filter on said cover above and in communication with said cock, and a stirring device removably inserted in said iilier and extending through said i ock into che jai'. 2. Preserving jar comprisingjr a perforated cover, a stop cock in the perforation olf said cover, an air filter on said cover above and in communication with said cock, a stirring device removably inserted in said filter and extending through said'coclc into the jar and discharging means associated with the jar.

In testimony whereof I aiiix in v signature.

HEINRICH RI`TER. 

